#!/bin/bash

#echo "Hello World!"

#your_name="tom"
#echo $your_name
#your_name="alibaba"
#echo $your_name

#myUrl="123"
#readonly myUel
#myUel="456"
#echo $myUrl

#string1="abcd"
#string2="efgh"
#greeting="lll,"$string1"!"
#echo $greeting
#echo ${#string1}
#echo ${string1:1:3}
#echo `expr index "$string1" b`

array_name=(tom jerry lili wanger)
echo ${array_name[1]}
echo ${array_name[@]}
echo ${#array_name[@]}
echo ${#array_name[1]}


